Open AccessMitigation of circulating current with effective energy management in low‐power PV‐FC‐battery‐microgrid
Author(s) -
MS Kamalesh,
Nattuthurai Senthilnathan,
Chokkalingam Bharatiraja,
MihetPopa Lucian
Publication year - 2021
Publication title -
international transactions on electrical energy systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 42
ISSN - 2050-7038
DOI - 10.1002/2050-7038.12899
Subject(s) - voltage droop , microgrid , control theory (sociology) , controller (irrigation) , engineering , power management , converters , power (physics) , computer science , voltage , voltage source , control (management) , electrical engineering , physics , quantum mechanics , agronomy , artificial intelligence , biology
Summary Microgrids are the localized network to support electricity consumers either in an islanded manner or in integration with macrogrid. Microgrids are generally vulnerable to major issues like improper voltage regulation, circulating current, and unequal power sharing. In this paper, conventional droop controller for current sharing is upgraded with a Boomerang Trajectory based Sliding Mode Controller (BT‐SMC). In the proposed BT‐SMC technique, the error trajectories are traced and controlled toward the equilibrium point accomplishing the system to reach the stable state. Also, the dynamic changes in the load are governed and controlled by adjusting the droop resistance in the parallel converters. The BT‐SMC generates an equivalent control signal based on the control law and maintains the PWM pulses on par with the droop value and duty ratio. Additionally, this paper concerns the precondition for power sharing and power management among the different RES at different availability conditions by adopting a Source Shifting Algorithm (SSA). The hand‐in‐hand process of BT‐SMC with SSA provides a proper load sharing with a wide stability region in the phase plane. The proposed self‐adapting and self‐tracking system is evaluated in Matlab/Simulink and the results were validated in real time by using dSPACE MicroLabBox—DS‐1202.